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RE: ALTER TABLE MOVE command causes table to grow

From: Karniotis, Stephen <Stephen_Karniotis_at_compuware.com>
Date: Thu, 05 Sep 2002 09:54:34 -0800
Message-ID: <F001.004C8B84.20020905095434@fatcity.com>


Jay:

  I would also wonder that the PCTINCREASE was on the table and the indexes. 10% PCTFREE is fine, but does lead to a significant number of empty blocks. What is your PCTUSED? If small, you will have lots of free space within blocks.

  Just a thought. Don't let your disk person know this happened as they may try to sell you more hardware.

Thank You

Stephen P. Karniotis
Product Architect
Compuware Corporation

Direct:	(248) 865-4350
Mobile:	(248) 408-2918
Email:	Stephen.Karniotis_at_Compuware.com
Web:	www.compuware.com

 -----Original Message-----
Sent:	Thursday, September 05, 2002 12:09 PM
To:	Multiple recipients of list ORACLE-L
Subject:	ALTER TABLE MOVE command causes table to grow

Had an annoying surprise last week. A table had grown unexpectedly large and I scheduled a time over the weekend to move it to its own tablespace from my "medium" tablespace.  

The table ended up growing 50%. I had anticipated it might grow somewhat given the PCTFREE of 10% but freeing up that space in the blocks should, at most, have caused it to grow by 10% (assuming that 10% was completely full).  

Does anyone have ideas as to why it would have grown by so much? Indexes are in a different tablespace and the only other change was from an extent size of 4 meg to one of 25 meg. Both are dictionary managed tablespaces.  

Oracle 8.1.7.2
Solaris 2.6  

Thanks,
Jay Miller  

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Author: Miller, Jay
  INET: JayMiller_at_TDWaterhouse.com

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Author: Karniotis, Stephen
  INET: Stephen_Karniotis_at_compuware.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
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To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Received on Thu Sep 05 2002 - 12:54:34 CDT

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